Show HN: I built an AI tool that writes replies to your emails automatically

Hey HN,

I built ReplyFast, a small AI-powered tool that writes email replies for you.

You just paste the incoming email, and it generates a reply using GPT-4 — straight to the point. You can edit it or copy/send as is. No login required, no setup, no integrations. I just wanted something fast and lightweight to avoid replying to the same messages over and over (demo requests, basic support, cold emails, etc.).

It’s not a full CRM or a productivity suite — just a focused tool for fast replies.

https://www.replyfast.net/

Built it solo in a few weeks. I’d love feedback on: – Is the idea useful to you? – What would make this 10x better? – Would you pay for it?

Appreciate any comments or suggestions